<!--********************************************************************
* Copyright© 2000 - 2025 SuperMap Software Co.Ltd. All rights reserved.
*********************************************************************-->
<!--********************************************************************
* 该示例需要引入 
* Mapv (https://github.com/huiyan-fe/mapv)
*********************************************************************-->
<!DOCTYPE html>
<html lang="en-US">
  <head>
    <meta charset="UTF-8" />
    <meta http-equiv="X-UA-Compatible" content="IE=Edge" />
    <meta name="viewport" content="initial-scale=1.0, user-scalable=no, width=device-width" />

    <title data-i18n="resources.title_mapvPolylineIntensity"></title>
    <style>
      body {
        margin: 0;
        padding: 0;
      }

      #map {
        position: absolute;
        top: 0;
        bottom: 0;
        width: 100%;
      }
      .maplibregl-popup-close-button {
        outline: none;
      }
    </style>
    <script type="text/javascript" include="jquery" src="../js/include-web.js"></script>
    <script type="text/javascript" include="mapv" src="../../dist/maplibregl/include-maplibregl.js"></script>
  </head>
  <body style="margin: 0; overflow: hidden; background: #fff; width: 100%; height: 100%">
    <div id="map"></div>
    <script type="text/javascript">
      var attribution =
        "<a href='https://www.maplibre.com/about/maps/' target='_blank'>© MapLibre </a>" +
        " with <span>© <a href='https://iclient.supermap.io' target='_blank'>SuperMap iClient</a> | </span>" +
        " Map Data <span>© <a href='http://support.supermap.com.cn/product/iServer.aspx' target='_blank'>SuperMap iServer</a> | </span>" +
        "<a href='https://mapv.baidu.com' target='_blank'>© 2018 百度 MapV</a>";
      var host = window.isLocal ? window.server : 'https://iserver.supermap.io';
      var tileURL = host + '/iserver/services/map-china/rest/maps/ChinaDark/zxyTileImage.png?z={z}&x={x}&y={y}';
      var map = new maplibregl.Map({
        container: 'map',
        style: {
          version: 8,
          sources: {
            'raster-tiles': {
              attribution: attribution,
              type: 'raster',
              tiles: [tileURL],
              tileSize: 256
            }
          },
          layers: [
            {
              id: 'simple-tiles',
              type: 'raster',
              source: 'raster-tiles',
              minzoom: 0,
              maxzoom: 22
            }
          ]
        },
        center: [110, 35],
        zoom: 4
      });
      map.addControl(new maplibregl.NavigationControl(), 'top-left');
      map.addControl(new maplibregl.supermap.LogoControl({ link: 'https://iclient.supermap.io' }), 'bottom-right');
      new maplibregl.Popup({ closeOnClick: false })
        .setLngLat(map.getCenter())
        .setHTML(resources.text_iClient)
        .addTo(map);

      var randomCount = 1000;
      var data = [];
      var citys = [
        '北京',
        '天津',
        '上海',
        '重庆',
        '石家庄',
        '太原',
        '呼和浩特',
        '哈尔滨',
        '长春',
        '沈阳',
        '济南',
        '南京',
        '合肥',
        '杭州',
        '南昌',
        '福州',
        '郑州',
        '武汉',
        '长沙',
        '广州',
        '南宁',
        '西安',
        '银川',
        '兰州',
        '西宁',
        '乌鲁木齐',
        '成都',
        '贵阳',
        '昆明',
        '拉萨',
        '海口'
      ];
      // 构造数据
      while (randomCount--) {
        var cityCenter1 = mapv.utilCityCenter.getCenterByCityName(citys[parseInt(Math.random() * citys.length)]);
        var cityCenter2 = mapv.utilCityCenter.getCenterByCityName(citys[parseInt(Math.random() * citys.length)]);
        data.push({
          geometry: {
            type: 'LineString',
            coordinates: [
              [cityCenter1.lng - 1 + Math.random() * 1, cityCenter1.lat - 1 + Math.random() * 1],
              [cityCenter2.lng - 1 + Math.random() * 1, cityCenter2.lat - 1 + Math.random() * 1]
            ]
          },
          count: 30 * Math.random()
        });
      }
      var dataSet = new mapv.DataSet(data);
      var options = {
        gradient: {
          0: 'blue',
          0.5: 'yellow',
          1: 'red'
        },
        lineWidth: 0.5,
        max: 30,
        draw: 'intensity'
      };
      map.on('load', function () {
        var mapVlayer = new maplibregl.supermap.MapvLayer(dataSet, options);
        map.addLayer(mapVlayer);
      });
    </script>
  </body>
</html>
